Results 71 to 80 of about 1,755,493 (252)

Caracterización y evaluación de PGPRs sobre el crecimiento de plántulas de Dioscorea rotundata in vitro

open access: yes, 2018
El objetivo de esta investigacion fue aislar y caracterizar rizobacterias promotoras de crecimiento vegetal (PGPRs, por sus siglas en ingles) nativas de la rizosfera en cultivos de Dioscorea rotundata de zonas productoras representativas del Caribe ...
D. López, J. V. P. Pazos
semanticscholar   +1 more source

Cost–benefit analysis of first‐trimester pre‐eclampsia screening: comparison of multivariable Gaussian algorithm with and without placental growth factor

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 2, Page 162-167, February 2026.
ABSTRACT Objective Pre‐eclampsia (PE) is a leading cause of maternal and neonatal morbidity and mortality worldwide. Early identification of high‐risk pregnancies in the first trimester allows preventive treatment with low‐dose aspirin. This study aimed to evaluate whether multivariable Gaussian algorithm‐based PE screening strategies, with and without
E. Bonacina   +10 more
wiley   +1 more source

Determinantes de la Inserción Internacional Provincial

open access: yesRevista de Economía y Estadística, 2009
¿Cuáles son los determinantes del comercio exterior provincial argentino? ¿Qué factores son los que determinan cuánto, qué, a qué precio y a dónde exportan las provincias argentinas?
Lucio Castro, Daniel Saslavky
doaj  

Primeras etapas de crecimiento de Brosimum alicastrum Sw. en Yucatán

open access: yes, 2018
El presente estudio proporciona informacion del crecimiento de Brosimum alicastrum (ramon) durante sus primeros anos, en una plantacion comercial localizada en Yucatan, Mexico.
Olivia Hernández-González   +2 more
semanticscholar   +1 more source

Advancing Water Security in the Tropical and Subtropical Regions: An Integrative Topic Modeling Approach

open access: yesWorld Water Policy, Volume 12, Issue 1, February 2026.
ABSTRACT Water security in tropical regions faces escalating pressures from climate change, land‐use shifts, and population growth. We conducted a bibliometric review of 1146 peer‐reviewed articles (1964–2023) on tropical water security. Latent Dirichlet Allocation identified 13 thematic topics and their evolution. Publications rose sharply after 2012,
Karling Fernanda Schuster   +3 more
wiley   +1 more source

Transitional effects of a pension system change in Spain [PDF]

open access: yes, 1997
This paper studies the output effects, transition costs and the change in pension benefits derived from the substitution of the current unfunded pension system by a fully funded pension system financed through mandatory savings.
Bailén, José M., Gil, Joan, 1966-
core  

Incertidumbre y dolarización: El caso ecuatoriano 1990-2011

open access: yesRevista Economía y Política, 2019
¿Cuáles son los costos y beneficios de perder la aplicación de una política monetaria convencional en una economía emergente? En este artículo para responder está pregunta nos enfocamos en el impacto de la dolarización en Ecuador, sobre la incertidumbre
Pedro Romero, Grace Llerena
doaj   +1 more source

Crecimiento 2021

open access: yesObservatorio Económico, 2021
Una pregunta muy relevante en la actual coyuntura económica es si las proyecciones de las autoridades de un crecimiento positivo -entre comillas- de un 6% del PIB para el 2021 es razonable o no. Es entre comillas porque para recuperarnos completamente de la crisis del 2020, la economía debería crecer por lo menos un 9%.
openaire   +2 more sources

Integrating Urban Expansion and Flood Risk: A Spatial Assessment of Impervious Surface Growth and Floodplain Exposure in Mecklenburg County (2011–2021)

open access: yesWorld Water Policy, Volume 12, Issue 1, February 2026.
ABSTRACT Urban expansion significantly impacts flood risk, particularly in rapidly growing areas where impervious surfaces exacerbate surface runoff. This study examines spatial patterns of urban growth and their effects on flood exposure in Mecklenburg County, North Carolina, from 2011 to 2021.
Pegah Madadi, Azad Sadeghi
wiley   +1 more source

Learning Model Based on Early Psychological Development and the Constitutive Role of Relationship

open access: yesEducation Sciences
A theoretical model of learning is proposed which is grounded in the constitutive role of interpersonal relationships, integrating contributions from early developmental psychology and relational philosophy.
José Víctor Orón Semper   +1 more
doaj   +1 more source

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